12066839 has 4 divisors (see below), whose sum is σ = 12074280. Its totient is φ = 12059400.

The previous prime is 12066829. The next prime is 12066883. The reversal of 12066839 is 93866021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 93866021 = 53 ⋅1771057.

It is a cyclic number.

It is not a de Polignac number, because 12066839 - 2²⁰ = 11018263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12066799 and 12066808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (3018570).

Almost surely, 2^12066839 is an apocalyptic number.

12066839 is a deficient number, since it is larger than the sum of its proper divisors (7441).

12066839 is an equidigital number, since it uses as much as digits as its factorization.

12066839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7440.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 12066839 is about 3473.7355973073. The cubic root of 12066839 is about 229.3671259489.

The spelling of 12066839 in words is "twelve million, sixty-six thousand, eight hundred thirty-nine".